Question

an object is moving in a circular path of radius 7m and completed one revolution in 11second . calculate speed of the object.
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Answer 1

Answer:

Speed = Distance

time

here, the shape of the object is circle. So for distance we can calculate the circumference of circle

CIRCUMFERENCE OF A CIRCLE = 2πR

THEREFORE, 2πR. = speed

11

= 2 × 22/7 × 7. = 2 × 3.1428571 × 7

11. 11

= 43.99999. = 3.999

11

Explanation:

HOPES IT HELPS YOU

Answer 2

$\large{\underline{\rm{\green{\bf{Given:-}}}}}$

➺ Radius of the circular path = 7 m

➺ Time taken to complete 1 revolution = 11 second

$\large{\underline{\rm{\green{\bf{To \: Find:-}}}}}$

➺ The total distance.

➺ The speed of the moving object.

$\large{\underline{\rm{\green{\bf{Analysis:-}}}}}$

$\sf Speed =\dfrac{Total \: distance}{Total \: time}$

$\large{\underline{\rm{\green{\bf{Solution:-}}}}}$

Given that,

Radius of the circular path = 7 m

Time taken to complete one revolution is 11 seconds

$\underline{\boxed{\red{\sf Total \: distance=2 \pi r}}}}}$

Substituting their values,

Total distance = $\sf 2 \times \dfrac{22}{7} \times 7$

Total distance = 44 m

Hence, the distance is 44 m

$\underline{\boxed{\red{\sf Speed =\dfrac{Total \: distance}{Total \: time}}}}}$

Substituting their values,

Speed = $\sf \dfrac{44}{11}$

Speed = 4 m/s

Therefore, the speed is 4 m/s

$\large{\underline{\rm{\green{\bf{To \: Note:-}}}}}$

➺ Average Speed = (Total distance traveled)/(Total time taken)

➺ Distance = Speed × Time

➺ Speed (measured in metres per second) is the distance moved by an object each second.